166288020670 has 16 divisors (see below), whose sum is σ = 301300681248. Its totient is φ = 66074709600.

The previous prime is 166288020659. The next prime is 166288020677. The reversal of 166288020670 is 76020882661.

It is a self number, because there is not a number n which added to its sum of digits gives 166288020670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166288020677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55060749 + ... + 55063768.

It is an arithmetic number, because the mean of its divisors is an integer number (18831292578).

Almost surely, 2^166288020670 is an apocalyptic number.

166288020670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166288020670 is a deficient number, since it is larger than the sum of its proper divisors (135012660578).

166288020670 is a wasteful number, since it uses less digits than its factorization.

166288020670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110124675.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 166288020670 in words is "one hundred sixty-six billion, two hundred eighty-eight million, twenty thousand, six hundred seventy".